Kunal M.

I help startups and businesses build scalable SaaS applications, custom web platforms, and API-driven systems using Next.js, React, Node.js, and TypeScript. With 11+ years of experience and a 100% Job Success score on Upwork, I specialize in developing high-performance applications that are fast, maintainable, and built for long-term scalability. My expertise includes: • SaaS application development • Full-stack JavaScript development • Next.js & React applications • Node.js backend systems • REST APIs & GraphQL APIs • Authentication & authorization systems • Stripe integrations & payment workflows • Shopify custom applications • Dashboard & admin panel development • MongoDB & PostgreSQL • Performance optimization • Scalable application architecture I have worked with startups, agencies, and growing businesses to build: • SaaS products • eCommerce systems • Internal business platforms • Multi-user dashboards • API integrations • Custom workflows • Headless commerce applications Tech Stack: Next.js, React, TypeScript, Node.js, Express.js, MongoDB, PostgreSQL, GraphQL, REST APIs, Shopify, Tailwind CSS, AWS, Vercel Why clients work with me: • Strong communication • Clean and maintainable code • Long-term reliability • Fast turnaround • Business-focused development approach If you need a reliable full-stack engineer who can build scalable and modern applications, feel free to invite me to your project.